What is the difference between relay and circuit breaker? DWQA Questions › Category: Switchgear and Protection › What is the difference between relay and circuit breaker? 0 Vote Up Vote Down Ravi asked 7 years ago 4 Answers 0 Vote Up Vote Down Bhaskar rao from khammam distic telenganastate answered 7 years ago Operating time of circuit breaker is 0.02 sec but operating time of relay is????? « Previous 1 2